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a tap can fill a tank in 6 hours. After half the tank is filled,two more similar taps are opened.What is the total time taken to fill the tank completely ? |
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Answer» Efficiency of TAPE = 1/6 part of the cistern PER hrNo of hrs taken in filling 1/2 part of cistern = 1/2*6 = 3 hrsEfficiency of three more similar taps taken together = 3*1/6 = 1/2 part of the cistern per hrEffective efficiency of the SYSTEM = 1/6 + 1/2 = 4/6 = 2/3 part of the cistern per hrTime taken to fill the remaining 1/2 part of cistern = 1/2*3/2 = 3/4 HR |
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